.menu {
    width: 100%;
    height: 45px;
    >div {
        position: relative;
        width: 100%;
        height: 100%;
        >div {
            display: inline-block;
            position: absolute;
            top: 0;
            height: 45px;
            height: 45px;
            line-height: 45px;
            font-size: 14px;
            color: #fff;
            text-align: center;
            cursor: pointer;
            background: url('./images/bg.png') no-repeat;
            background-size: 100% 100%;
            >a {
                display: inline-block;
                width: 100%;
                height: 45px;
                line-height: 45px;
                font-size: 14px;
                color: #fff;
                text-align: center;
                cursor: pointer;
            }
        }
        >div:hover {
            background: url('./images/bg_active.png') no-repeat;
        }
    }
}